Elevator.



H. A. HUMPHRBY.

ELEVATOR.

APPLICATION FILED JAN.19, 1909.

Patented MM, 1910.

3 BHEBTB-BHEET 1.

vWIZZV'ESISES: W a INVENTOR.

I I I M M H. A. HUMPHRB Y. ELEVATOR.

APPLICATION FILED JAN. 19, 1909.

963,569. Q Patented Ju1y 5,1910.

.3 SHEETS-SHEET 2.

WITNESSES; a \myfi/zigmze.

UNITED STATES PATENT OFFICE.

HENRY A. HUMPHREY, OF KANSAS CITY, MISSOURI, ASSIGNOR, BY DIRECT ANDMESN E ASSIGNMENTS, TO SAFETY ELEVATOR LOCK AND SIGNAL COMPANY, A COB.-

PORATION OF MISSOURI.

nrnvn'ron.

Specification of Letters Patent.

Patented July 5, 1910.

Application filed January 19, 1909. Serial No. 173,042. s

To all whom it may concern:

Be it known that I, HnNnv A. HUMPHREY,

a citizen of the United States, residing at Kansas City, in the countyof Jackson and State of Missouri, have invented a certain new and usefulImprovement in Elevators, of which the following is aspecification.

My invention relates to improvements in elevators.

The object of my invention is to provide an elevator construction inwhich the hoisting mechanism will become inoperative for moving the carwhen one of the elevator gates is open, thus eliminating the danger ofany one falling into the elevator shaft through an open gateway due tothe failure of the car operator to close the gate.

The novel features of my invention are hereinafter fully described andclaimed.

In the accompanying drawings illustrating the preferred form of myinvention, Figure 1 1s a diagrammatic view vof the different circuits.Fig. 2 is a view, partly in vertical section and partly broken away, ofmy improved elevator mechanism. Fig. 3

is a View, enlarged, partly in vertical section and partly in sideelevation of one of the gate locking devices, the locking memhers beingshown in the unlocked positions. F ig."4 is a horizontal section on thedotted line a-Z) of Fig. 3. Fig. 5 is a view similar to Fig. 3,excepting that the locking memhers are shown in the locked positions.Fig.

6 is a vertical section on the dotted lines 0d of Fig. Fig. 7 is anenlarged side elevation of'the motor operated circuit controllingmechanism. Fig. .8 is an elevation front view of what is shown in Fig.7. Fig. 9 is a cross section on the dotted line e-f of Fig. 7. Fig. 10is a cross section on the dotted line (15h of Fi 7. Fig. 11 is a topview of the threade drum. Fig. 12' is an end-view of the same. Fig. 13is an enlarged fragment-a1 elevation View of a pair ofadjustable contactmembers.

S 1m1lar characters of reference denote similar parts.

Referring first to Figs.- 1 and 2, 1 denotes the elevator shaftframework, 2, 3 and 4 the several floors of the buildin 5 ordinary shaftopening gates of the horizontally slidable type, 6 the elevator car, 7the car supporting cable mounted on the hoisting drum 8 supported on ahorizontal shaft 9 to which .55 is secured a worm wheel 10 meshing witha worm 11 on the armature shaft 12 ofan electric motor 13. A pluralityof casings 15 aresecured to the frame 1 at the respective floors. Saidcasings contain the gate, looking mechanisms, andas all are alike 2.description ofone will sufiice for all.

Referring now to Figs. 3 to 6, in the casing 15 are secured horizontalpins 16 on which are pivoted two locking members 17 having hooked outerends for engaging a T shaped bracket 18 secured to, the adjacent gate 5.The casing 15 is provided with a slot 19 for receiving said bracket..Two springs 20 secured to the casing 15 normally force the members 17to the closed positions shown in Fig. 5. .Two armatures 21 are securedrespectively to the members 17 at the rear of pins Y16 and disposedrespectively opposite the ends of the core of an electromagnet 22disposed intermediate the rear ends of mem-' bers 17. Slidably mountedin bearings 24 intermediate the members 17 is a horizontal bar 23disposed so that its outer end may be struck and forced back by thebracket 18. A coil spring 25 encircling the bar 23 has its rear endbearingupon the rear bearing 24: and its forward end bearing against a.transverse vertical bar- 26 secured to the bar 23; When the gate is openand the bracket 18 withdrawn from the casing 15, the spring 25 willforce the bar 23 outwardly so that bar 26 will hold the members 17 inthe open 'position, shown in Fig. 3. Secured respectively to the members17 are spring plates 27 carrying respectively two contact devices 28 an29, said devices being suported by blocks 30 of insulating material.'Vhen the magnet 22 is energized and the gate 5 moved to the openposition, the members 17 will be swung to the position shown in Fig. 3in which position the contact devices 29 and 28 will be separated so asto break the circuit in which they and the motor 13 are located, therebystopping the .running ofthe motor. Secured to any part rotated by themotor 13, as-for instance the shaft 9, is a horizontal screw threadeddrum 31. to

v the periphery of which is secured a cord 32 adapted to be wound on thedrum and secured to a support 33to which is pivoted an arm 34 carrying acontact device comprising preferably a roller 35 adapted to suocessivelstrike a plurality of contact devices 36, 3

and 38, hereinafter more fully described, and which are respectivelyconnected, .as shown one set of ends of the magnet windings the otherset of ends of which are connected in Fig.1 by conductors 39, and 41'with respectively by conductors 42, 43 and 44 to' a conductor .45 whichin turn is connected to a lever 47 pivoted on the floor ofthe car and acontact device 48 adapted to.

strike a contact device 49 from which it is. normally separated by aspring 50 which :6 is adapted when'swlmg to and fro to strikealternatelycontacts 58 and 59. A conductor 60 connects the lever 57 with thecontactdevice 28 of the lower set. A conductor 61 connects the contact29 of the lower set with the contact 28 of the next-higher set, and acon 'ductor 62 connects contact 29 of the last.

namedset with the uppermost contact 28. A conductor 63 connectsthe'uppermost contact 29 with arconductor 64 which is 'connectedto onebrush of a generator 65, the

' other brush of which isconnected by a conductor 66 with ac0nduct6F'67, the ends of which are respectively connected to one set ofends of the windings of two electromagnets 68 and 69, the other set ofends of which are respectively connected by conductors 70 and 71 withthe contacts 59 and 58. A contact 72 is connected to conductor 64, and acontact 74 is connected to a conductor 73 which is connected toconductor '64. A con-- ductor 75 connected to conductor 66 is connectedto two contacts176 and 77 disposed respectively opposite to contacts 72and 74'.

A bar 78 is ivoted between the magnets 68 and 62. and tween the contacts76 and 77 and 72 and 74. Two coil springs 79 disposed. at opposite sidesof the bar 78 serve to normally hold the bar 78 in the intermediatecentral position shown in F-i -1. Carried by but insulated from the bar8 is a contact 81 connected by a conductor 80 with one brush of a motor13, the other brush of which is connected by a conductor 82 with acontact 83 carried by butinsulated fromthe bar 78; Secured to the bar 78atop osite sides of its pivot and in the fields of e ma ets 68 and 69are two armatures 84 an 85.

When the magnets 68 and 69 are alternately energized the armatures willbe attracted alternately so as to bring the contacts 81 and 83 intocontact with contacts 74 and76 and then into contact with contacts 72and 77.

Thus when, the bar 78 is alternately the direction of the currentthrough the motor 13 will be changed thus changing its directionofrunning.

"I will now describe the mechanism fo the nuts the members -90 may drum8 is rotate V When the drum is rotated to raise the car controlling theopening and closing of the supplemental circuit in which are located inm tiple the magnets 22. Referring to Figs. 8.to 13, 86 denotes avertical bar of conducting material on which the support 33 isvertically slidable. Said bar 86 1s se-v cured to a vertical bar 87 ofinsulating material. rovided with a vertical groove 88 in one si e inthe bottomv of which is a vertical slot89.-' The contact devices 36, 37and 38 previously referred to are secured to the'bar- 87.' As all ofthese devices are alike a description of one will suflice. Each of thesecontact devices comp isestwo members of conducting materia the groove 88wherein they are secured 90 located in b a horizontal screw 91whichextends through the slot '89 between said members, and has its headresting against said members so as to tightly clamp them to the bar 87.-Upon the screw'91 at the rear of bar 87 is a nut 92 for securin 'thescrew in position to which it may adjusted. A second nut 93 is mountedon the screw 91. The conductor-39, 40 or 41, as the case maybe issecuredcbetween the'nuts 92- and '93 of the contact devices 36, 37 or38. By loosening v v v both be vertically adjusted relatively to eachother and relative to the bar 87. A bindin post 94 is secured to the bar86, said bin post,

bar-86, sup ort 33 and arm 34 forming part of the con uctor 53, shown inFig. 1. The support 33'is disposed so that when reciprocated the rollercontact 35 will consecutively strike the contact members 90 of thecontact devices 36, 37 and 38, thereby closing the circuit in which saidcontacts are located and successively energizing the magnets 22. Thecord 32 passes from the small threaded drum' 31 upwardly to and over apulley 95, thence horizontallyto and over a pulley 96, and thencedownwardly to the support 33, as shown in'Fig. 2. A spring 97 secured tothe support 33 serves to normall swing the arm 34 fee position in whicht 1e roller will strike the contact'members 90 when the support 33 isvertically reciprocated- A weight 98 carriedby the support133 serves tomove said sup ort downward when the so as to lower the car 6.

the cord 32 is wound-on the small drum 31 thus raisin the support 33.By. vertically adjusting t e member 90 of one'set relative to the othersets the device is made to conform to floors located at differentdistances apart. By relatively adjusting the members 90 the length of;surface contact of said members may be adjusted.

The operator on the car controls the motor 13 by the lever v57. Whenlever 57 is swung onto contact 59, the current from the generator willpass by conductor 66and conductor 67 to magnet 68, thence to generator65 as follows z-By conductor 70, con- 76 and 83, thence by conductor 82to motor 13, thence by conductor 80, contacts 81' and 7 4:, andconductors 73 and 64 to generator 65. a

When the lever 57 is swung against contact 58 the current from generator65 will pass by conductors 66 and 67, magnet 69, conductor 71, contact58, lever 57 and thence by the path already described back to generator65.. The magnet 69 being energized the armature 85 will be attractedthereby thus swinging bar 78 so that contacts 81 and 83 will strikecontacts 77 and 72. The current will then pass from generator 65 byconductors 66 and 75, contacts 77 and 81, con ductor 80, motor 13,conductor 82, contacts 83 and 72 and back by conductor 64 to generator65. As the motor 13 is run to rotate the drum 8 to elevate or lower thecar 6, the" support 33 will carry the roller contact 35 upwardly ordownwardly according to the direction the car is moving. The contact 35will thus successively strike the contact members 90 of the sets 36, 37and 38. The dispo sition relatively of said sets is such that thecircuit will be closed in the supplemental circuit containing themagnets 22 at such times as the car 6 is at a floor in position foringress or egress. When the car reaches say floor 3, the contact 35 willstrike contact members 90 of set 37 The circuit will then be completedfrom battery 52, if lever 47 has been swung so that contacts 48 and 49are togather, through conductor 53, contacts 35. and 37, conductor 40,adjacentmagnet 22,

conductors 43 and 4:5, lever 47, contacts 48 and l9, and by conductor 51back to battery 52. The energizing of magnet 22' at floor 3 will causethe locking members 17 adjacent thereto to swing to the unlockedposition, so that the gate 5 may be opened. When the members 17 are thusswung the circuit containing motor 13 will be broken at floor 3 therebyrendering the motor inoperative. The car can not-leave the floor untilthe gate 5 has been closed. When this has been done the bracket 18 willforce rearwardly the bar 23, after which-the springs 20 will swing themembers 17 to the closed position thereby again bringing adjacentcontacts 28 and 29 together and again closing the motor circuit.

In this position the members 17 will engage and hold the. bracket 18 sothat the gate can got be opened until the car again reaches the cor.

From the above it will be understood that at all times thegates areclosed excepting when the car is at a floor, and the operator cannotstart the car without closing the adjacent gate.

Modifications of my invention, within the scope of the appended claims,may be made Without departing from its spirit.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is

1. In elevators, the combination with an electric car-hoisting motor,located in an electric circuit, of a gate, circuit controlling means insaid circuit controlled by said gate, electromagnetic means located in asupplemental circuit and controlling said circuit controlling means, arectilinearly reciprocative circuit controlling device for controllingsaid supplemental circuit, and means controlled by the motor forcontrolling the reciprocation of said device.

2. In elevators, the combination with an electric car-holstmg motorlocated in an electric circuit, of a gate, circuit controllingmeans insaid circuit controlled by said gate, electromagnetic means located in asupplemental circuit and controlling said circuit controlling means, areciprocative slidable circuit controlling device for controlling saidsupplemental circuit, means actuatedby the motor for sliding said devicein one y direction, and means forsliding said device in the oppositedirection.

3. In elevators, the combination with an electric car hoisting motorlocated in an electric circuit, of a plurality. of gates located atdifferent floors, a plurality of circuit con trolling means located insaid circuit and controlled respectively by said gates, a plurality ofelectromagnetic means located in a supplemental circuit and respectivelycontrolling said circuit cont-rollmg means, a rectilinearlyreciprocative device for successively closin the supplemental circuit byway-v of sai electromagnetic means, and

means controlled by the motor for recipro eating said devi i 4,Inelevators, the combination with an electric hoisting motor located inan 'elec-' tric circuit, of a gate, circuit controlling means in saidcircuit controlled by said gate, electromagnetic means located 1n a.supplemental circuit and controlling. said circuit controlling means,.two circuit closing contacts in sald supplementalcircuit, one of saidcontacts being movable into and out of contact with the other contact, aslidable device carrying said movable contact, a rotary member, meansactuated by said motor forrotating said rotary device in oppositedirections, and means for sliding said device when saidrotary member isrotated.

5, Inelevators, the combination with an electric hoisting motor locatedin an electric circuit, of a plurality of gates, a lurality located inmultiple in a supplemental circuit and respectively controlling saidcircuit con-- trolling means, a plurality of circuit closing contactsone of which is movable, the

others being connected respectively with said electromagnetic means, aslidable device carrying said movable contact and movable to positionsin whichthe movable con- .tact will successively strike the othercontacts so as to close the supplemental circuit therethrough, a rotarymember, means actuated by said motor for'rotating said rotary member,and means for sliding said device when said rotary member. is rotated.

6. In elevators, the combination 'with an electric hoisting motorlocated in an electric circuit, of a gate, circuit controlling meanslocated in said circuit and controlled by said gate, electromagneticmeans located in a supplemental circuit and controlling said circuitcontrolling means, two circuit closing contacts in said supplementalcircuit, one contact being movable into and out of contact with theother, means actuated by the motor for so moving said movable contact,and means for varying the length of time the said contacts are inmovable contact with each other.

7. In elevators, the combination with an electric hoisting motor locatedin an electric circuit, of a gate, circuit controlling means located insaid circuit and controlled by said gate, electromagnetic means locatedin a supplemental circuit and controlling said circuit controllingmeans, two circuit closing contacts in said supplemental circuit,

- one contact being movable, into and out of contact with the other, onecontact being adjustable as to the length of contact sur face, and meansactuated by the motor for moving said movable contact.

8. In elevators, the combination with an electric hoisting motor locatedin an electric circuit, of a plurality of gates located at differentfloors, a plurality of circuit controlling means in said circuit andrespectively controlled by said gates, a plurality of electromagneticmeans located in multiple in a supplemental circuit and respectivelycontrolling said circuit controlling means, a plurality of circuitclosing contacts one of which is movable successively into contact withthe other contacts, said other contacts being adjustable as to length ofcontactsurface, and means actuated by the motor for so moving saidmovable contact;

9. In elevators, the combination with hoisting motor, of a plurality ofelectromagnetic devices located in an electric circuit, means by whichsaid devices control the running of said motor, a plurality of, contactdevices in said circuit, said contact devices being adjustable relativeto each other, a movable contact'devicein saidcircuit adapted tosuccessively strike said contact devices, and means actuated by saidmotor for moving said movable contact device.

10. In elevators, the combination with'an electric hoisting motorlocated in an electric circuit, of a plurality of circuit controllingdevices located in'said circuit, a plus rality of gates respectivelycontrolling said circuit controlling devices, a plurality ofelectromagnetic means located in a supple mental circuit respectivelycontrolling said circuit controlling devices, a plurahty of contactdevices located in. circuit respec tively with said electromagneticmeans, and adjustable relative to each other, a movable contactdevicein" said su plemental circuit, and means actuated by said motorfor brin ing the movable contact device successivey into contactwithsaid first named contact devices.

11. In elevators,the combination with a hoisting motor, of a pluralityof means located at different floors for separately con trolling therunning ofsaidmotor, a 1nrality of electroma etic means located in .anelectric circuit or respectively controlling said controllin means, aplurality .of contact devices in circuit respectively with saidelectromagnetic means and adjustable toward and from each other, amovable contact device, and means actuated by said mo tor forsuccessively bringing said movable contact device into contact with thefirst named contact devices.

12. In elevators, the combination with a. hoisting motor, 'of aplurality of contact devices located in an electric circuit andadjustable relative to each other, a movable contact devicereciprocative into positions successively in contact with said contactdevices, means controlled by said motor for reciprocating said movablecontact device to successivelg close said circuit throu h the first namemeans by which the running of said motor is stopped when the saidcircuit is closed.

13. In elevators, the combination with an contact devices respective y,and" electric hoisting motor located in an electric circuit, of aplurality of circuit break- .ing devices located in said circuit atdifierent floors, a plurality of electroma trolled by said motor forreciprocating said contact device.

14. In elevators, the combination with a hoisting motor, of a pluralityof contact devices located one above the other and located in anelectric circuit, a vertically reciprocative contact device in saidcircuit and adapted when reciprocated to successively strike saidcontact devices, said contact device being movable downward by gravity,means actuated by said motor formoving said contact device. upwardly,and means for stopping said motor when said circuit is closed.

15. In elevators, the combination with a hoisting motor, of a pluralityof contact devices located in anelectric circuit and adjustable relativeto each other, a reciprocative contact device located in said circuitfor successively striking said contact devices when said device isreciprocated, said device being movable in one direction by gravityactuated means, means actuated by said motor for moving said contactdevice in the opposite direction, and means by which the motor isstopped when said circuit is closed.

16. In elevators, the ,combination with a hoisting motor, of a pluralityof contact devices located in an electric circuit and adjustablerelative to each other, a reciprocative contact device adapted whenreciprocated tosuccessively strike said contact devices and close saidcircuit, a rotary member rotated in opposite directions b said. motor,

a cord connected to and adapte to be wound on said rotary member formoving said contact device in one direction, means for moving saidcontact device in the opposite direction, and means for sto ping saidmotor when said circuit is closed? 17. In elevators, the combinationwith a hoisting motor, of a plurality of cont-act devices located oneabove the other in an electric circuit, a vertically reciprocativecontact device adapted when reciprocated to successively strike saidcontact devices for closing said circuit, a vertically movable supportfor said contact device, a rotary member rotated in opposite directionsby

